Improvement in combined eraser-holder and pencil-point protector



w. H. BENNETT. COMBINED ERASER, HOLDER, AND PENCIL POI-NT PROTECTOR.

N 18Z,63Z, Patented Sept. 26,1876.

WlTNESSES INVEN'rdR I WZZmHBenneZij NJUERS, PHOTO LITHDGRAPMER,WASHINGTON. D C.

ITNITED STATE PATENT OFFICE.

, WILLIAM HrBENNETT, OF NEW YORK, N. Y., ASSIGNOR TO ORESTES CLEVELAND,OF JERSEY CITY, NEW JERSEY.

- IMPROVl-IlVIENT INCOMBINED ERASER-HOLDER AND PENCIL-POINT PROTECTOR.

Specification forming part of Letters PatentNo. 182,632. dated September26, 1876; application filed January 10, 1876. v i 1 have invented anImprovement in Eraser Holders and Pencil-Point Protectors, of which thefollowing is a specification:

The means heretofore employed for securing erasive heads in metallictubular holders, which are adapted for attachment-to ordinaryleadpencils either as supports for the eraser or as protectors for thepencil-point, have been provided at the extremity of the tube, theresult of which is that, in manipulating the eraser in removing marksfrom a rigid surface, the said eraser is worked out of its holder andrequires to be frequently restored to its proper position.

The object of this invention is to overcome this defect of constructionand the invention consists in an eraser-holdin g tube provided with ameans for engagement with the erasive head, which projects into the tubeat a point so farremoved from its mouth or outer end as to afford aplain bearing-surface at the eX- treme end of said tube, whereby aleverage or bearing is provided for the erasive head, which issufficient to protect it from being drawn or twisted. out of the hold ofthe means which retains it within the tube.

Holding devices which embody my invention are shown in the accompanyingdrawings, where Figures 1, 3, and 4 are plan views Fig. 2, a top view ofFig. 1,and Fig.5 a section taken through the projection of Fig. 4.

The device shown in Figs. 1 and 2 con sists of a holder formed from asingle piece of sheet metal, which is brought into the form of a splittube and provided with two or more wedge-shaped flanges, which are cutfrom the sides of the tube-body and turned inwardly, preferably at rightangles, so as to form projecting flanges, which shall engage with theerasive head. The said flanges lie in inclined planes, whereby they notonly hold the erasive head against longitudinal strain, but act as ascrew-thread, and thus facilitate its insertion into the tube and itsadjustment therein.

The tube A is made from any suitable sheet material, drawn or otherwisefashioned into a cylindrical tube; The form of a split tube, as inFig.2, which is adapted to firmly grasp or clamp the pencil, ispreferred, since such a tube is adapted to be fitted upon pencils ofdifferent diameters. But a solid tube, or one having the eraser-holdingend made solid, while the end'receivin g the pencil'body is split, maybe employed in carrying out my invention, as in Fig. 4.

Clips or tongues a are cut from the tubebody and turned inwardly atright angles, or nearly so, to the tube sides, which clips or tonguesare of wedge form, and constitute flanges or projections that embedthemselves in the rubber eraser or forcibly impinge upon its surface andhold it firmly in place when the erasive head is inserted in the holderor into engagement with the tongues, orisforced past them. These clipsor tongues are situated at some distance from the upper edge or mouth ofthe tube, thereby providing a portion, b,of the tube smooth anduninterrupted, which said portion acts as a bearing for the erasiveheadabove the holdingclips or tongues,

The erasive head 0 is of the ordinary cylindrical form, and is insertedinto the holder by introducing one of its ends into the month end of theholder, and then turning it round until it has engaged the clips ortongues and they have become embedded in it. It may thus be adjusted soas to protrude beyond the end of the tube or be entirely coveredthereby. The several projecting tongues may be arranged so as to formdifi'erent portions of the same or independent screw-threads, as isobvious.

I have thus far described the device shown in the Figs. 1 and 2 of thedrawing, but while they show a construction advantageous, by reasonofits simplicity and cheapness of production, they illustrate but one ofmany forms in which my invention may be applied.

The means for retaining the erasive head I within the tube may be simpleteats or other "shaped projections formed by swaging or upsetting thebody of the tube without perforating it, and they may be inclinedprojections forming segments of a screw-thread, or be extended to form ahelix. They may be simple spurs, if that form of holdin gdevice ispreferred, and, whatever he the construction of the eraser holding orretaining devices, they may project in planes parallel to or coincidingwith the end or mouth of the tube. These modifications are shown inFigs. 3, 4, and 5.

Any means operating substantially as described for holding the eraser,which is situated at a distance from the mouth or end of the tube, whichshall provide a bearing-surface, b, for the body of the erasive head,and

prevent its easy displacement when manipulated in erasing marks, Iregard as within the scope of my invention. 7

I therefore claim- I. The eraser-holder herein described, consisting ofa tube having inwardly-projecting W. H. BENNETT.

Witnesses:

H. T. MUNsoN, JoHN O. FOSTER, Jr.

